- Send lube techs to an ultrasonic training class.
- Set alarms to relubricate at 8 to 10 dBµV over baselines established by a digital ultrasonic condition monitoring program.
- For consistency, use the same ultrasonic instrument for both condition monitoring and relubrication. Preferably, the ultrasonic device should provide digital measurement and listening capabilities. “Listen only” units are subjective and depend on the hearing capabilities of multiple users.
- Apply grease slowly while both listening and measuring. Your target is to return the dBµV values back to baseline.
- Grease … then wait. Don’t hurry at the expense of doing the job correctly. Allow the grease to work into the cage, rollers, and grease cavity. The bearing may initially go quiet, and then loud again as the grease is worked in.
